Skysa

Promote your Twitter account at the same time while driving traffic to your website. Customize the default Tweet, set what URL to share in the tweet and set the option to show or hide the tweet count next to the tweet button. By allowing your site visitors to tweet about your site on their twitter accounts, it will help get the word out about your site and drive targeted traffic from twitter users who see the tweets directly to your site.
http://www.youtube.com/watch?v=Zj1uGXX2xrk&hd=1 
<a href="https://wordpress.org/extend/plugins/tags/skysa-apps" rel="ugc">More Skysa App plugins</a> -|||- <a href="https://wordpress.org/extend/plugins/skysa-official/" rel="ugc">Skysa App Bar Integration plugin</a>

Skysa Tweet App

Let people share content on Twitter (a Tweet) without having to leave your web page. This app displays a Tweet button at the bottom of your site.

binarymoon

Adds Twitter’s new Tweet button to your posts. Also includes a control panel for setting the buttons options. Will soon include other Twitter based features to improve your WordPress & Twitter usage.

BM Tweet This

A simple method for adding Twitter Buttons to your WordPress theme

Skysa Tweet App vs BM Tweet This